JP2525571Y2 - Gate door - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gate installed at a doorway of a garage or the like.

[0002]

2. Description of the Related Art Conventionally, as a flip-up type gate installed at a doorway of a garage, a support arm which is vertically rotatably attached to a pair of left and right supports and is bent in a V-shape, is provided between a front end portion of the support arm.
2. Description of the Related Art A gate is known in which a door body is rotatably mounted between a vertically closed state and a horizontally opened state, and includes a balance means comprising a spring in a support column for balancing the weight of the door body including a support arm. It is.

[0003]

However, according to the conventionally known gate, the size of the balance means is increased, and when the weight of the door body including the support arm is large, a sufficient spring force capable of coping with the weight is obtained. There was an inconvenience that I could not do it.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned inconvenience, the present invention is to vertically rotate a door between a vertically closed state and a horizontally opened state between a pair of right and left columns via an arm. A gate which is provided so as to be able to attach and balance the weight of a door body including a support arm in a support column, wherein the balance means is provided with an operating lever which rotates integrally with the support arm, and an upper end thereof. An operating rod pivotally attached to the operating lever and extending downward, a first coil spring fitted on the outer periphery of the operating rod, and inserting the first coil spring in a different winding direction from the coil spring; A second coil spring, an outer jacket for accommodating the second coil spring, fixing the lower ends of the two coil springs, and holding the lower ends vertically rotatable with respect to the support, and sliding in the outer jacket. Movement And a stop ring attached to the operating rod and fixing the upper ends of both coil springs. In the above, the operating rod is slidably guided to the upper end of the outer jacket. A guide ring and a guide sleeve for slidingly guiding the lower end of the operating rod are provided on the inner bottom surface of the mantle, respectively.

[0005]

[Function] When the door is in the vertically closed state,
The first and second coil springs have the most reduced lengths and are in balance with the weight of the door body including the support arm. When the door is pushed up from this state, the operation lever rotates upward together with the support arm, and the operation rod moves upward by the upward rotation, so that the first and second coil springs become the most extended length. Thus, the weight of the door body including the support arm is balanced with the spring force of the first and second coil springs, and the horizontal opening state of the door body 4 is maintained.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail with reference to the drawings. FIGS. 1 and 2 show a door body 4 between support arms 3, 3 which are vertically rotatably mounted on a pair of right and left columns 1, 2, respectively. And a rear view and a side view in which the door body 4 is in a vertically closed state. The supporting columns 1 and 2 are formed of a rectangular cylinder, and the side of the supporting arm 3 is bent in a V-shape. A bearing 6 is provided on the upper part while being supported by the rotating shaft 5, and a balance means 7 is provided inside.

The balance means 7 has an operating lever 10 whose base end is fixed to the rotating shaft 5, and an upper end pivotally attached to the free end of the operating lever 10 by a shaft pin 11 so as to be rotatable downward. An operating rod 12 composed of a hanging round pipe and an operating rod 1
Small-diameter first coil spring 13 fitted to the outer periphery of
A large-diameter second coil spring 14 having a different winding direction from the first coil spring 13 and having the first coil spring 13 housed in a center hole, and accommodating the second coil spring 14; An outer jacket 17 having a guide ring 14 made of synthetic resin for slidably guiding the operating rod 12 at an upper end portion, a bottom plate 16 to which a lower end of the second coil spring 14 is fixed at a lower end, and the bottom plate 16. A guide sleeve 18 erected and fixed at its upper end to the lower end of the first coil spring 13 slidably supporting the lower end of the operating rod 12 at the center, and an outer jacket 17 attached to the operating rod 12. And a stop ring 19 to which upper ends of the first coil spring 13 and the second coil spring 14 are fixed, respectively.
Is engaged with a recess 22 of a fixed plate 21 provided horizontally on the columns 1 and 2 via a shaft pin 24 on a support 23 provided on the recess 22. It is pivotally mounted so that it can rotate vertically. In the figure, S indicates a variable stroke.

When the door 4 is in the vertically closed state as shown by the solid line in FIG. 2, the first and second coil springs 13 and 14 are most contracted as shown by the imaginary line A in FIG. And the weight is balanced with the weight of the door body 4 including the support arms 3. When the door 4 is pushed up from this state, the operating lever 1 is moved together with the support arms 3 and 3.
0 rotates upward, and the upward rotation causes the operating rod 12 to rotate.
Moves upward, as shown by the imaginary line B in FIG. 3, the first and second coil springs 13 and 14 become the most extended lengths,
In this state, the weight of the door body 4 including the support arms 3 is balanced with the spring forces of the first and second coil springs 13 and 14, so that the horizontal opening state of the door body 4 is maintained.

[0009]

According to the present invention, as described above, the first and the second
Since the coil spring has a double structure, a sufficient spring force can be obtained even for a heavy door body, the balance means can be downsized, and even if one of the coil springs is broken, Therefore, the first coil spring is held by the operating rod, and the second coil spring is held by the mantle, so that there is no fear of buckling deformation.

[Brief description of the drawings]

FIG. 1 is a general rear view in a closed state.

FIG. 2 is an overall side view of a closed state.

FIG. 3 is an enlarged longitudinal side view partially omitted.

[Explanation of symbols]

 Reference numerals 1 and 2 3 Support arm 4 Door 5 Rotating shaft 7 Balance means 10 Operating lever 13 First spring 14 Second spring 15 Guide ring 17 Outer jacket 18 Guide sleeve 19 Stop ring

Claims (2)

(57) [Scope of request for utility model registration] 1. A weight of a door body which is vertically rotatably mounted between a pair of left and right supports via an arm between a vertically closed state and a horizontal open state, and which includes a support arm in the support. A gate having a balance means for balancing the balance means with the support arm, an operation lever pivoting integrally with the support arm, an operation rod having an upper end pivotally attached to the operation lever and extending downward, and The first fitted to the outer periphery of the rod
A coil spring, a second coil spring in which the first coil spring is inserted in a different winding direction from the coil spring, and the second coil spring are housed, and the lower ends of both coil springs are fixed, and An outer jacket whose lower end portion is vertically rotatably fixed to the column, and a stop ring slidable in the outer jacket and attached to the operating rod and fixed to the upper ends of both coil springs. A gate characterized by that. 2. A guide ring for slidingly guiding an operating rod at an upper end of an outer jacket, and a guide sleeve for slidingly guiding a lower end of the operating rod on an inner bottom surface of the outer jacket. The gate.